Multimedia transfer is still a practical impossibility, for better or for worse.
Mobile IRC works, sort of, if you don't mind spamming the channel every time you lose connectivity when you drive into a tunnel or when your phone goes to deep sleep. Again, you can set up a bouncer for that.
I welcome the new changes in IRCv3 and hope that one day soon all IRC users will be able to use the features everyone else has been using for fifteen years or so.